Subspace Labs Inc., a scalable infrastructure layer solution for Web3 blockchain ecosystems, today announced it raised $32.9 million in a funding round to expand its integrations and start more ...

Subspace codes are a class of error-correcting codes defined over the set of subspaces of a finite vector space. They have emerged as a powerful tool in network coding, where information is ...

Abstract: In the non-stationary environment, compared with the traditional subspace estimation algorithm, the projection approximation subspace tracking (PAST) algorithm can achieve less computation ...

Two weeks ago, a modest-looking paper was uploaded to the arXiv preprint server with the unassuming title On the invariant subspace problem in Hilbert spaces. The paper is just 13 pages long and its ...

Let T be a C·0-contraction on a Hilbert space 𝓗 and 𝒮 be a non-trivial closed subspace of 𝓗. We prove that 𝒮 is a T-invariant subspace of 𝓗 if and only if there exists a Hilbert space 𝓓 and a ...

Abstract: We study direction-of-arrival (DOA) estimation from coarsely quantized data. We focus on a two-step approach which first estimates the signal subspace via covariance estimation and then ...

Let F be a complex Banach space, B(F) the algebra of all bounded operators acting on F, E = E(ℂ, B(F)) the Fréchet space of all entire functions from the complex plane into B(F), endowed with the ...